<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8" />
		<title>1.关于箭头函数的简写</title>
	</head>
	<body>
		<script type="text/javascript" >
			let demo = n => {
				if(n>5) return n+1 
			}

			const x = demo(1)
			console.log(x)

		</script>
	</body>
</html>